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Automatic charging device for an AGV on an automated container terminal and charging method therefor

a charging device and container terminal technology, applied in the direction of coupling device connection, transportation and packaging, instruments, etc., can solve the problems of agv power outage, agv simply stalling, agv battery failure, etc., and achieve the effect of fully charging within a short tim

Active Publication Date: 2020-11-10
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to improve the charging efficiency and operation efficiency of an autonomous guided vehicle (AGV) in a container yard. The invention is achieved through the use of a fast charging lithium iron phosphate battery as the driving power supply and an automatic charging device in the AGV charging buffer region. Additionally, a hook shaped automatic charging device is utilized to ensure smooth connection with the charging device, even in cases of failed precise positioning of the AGV. The invention also includes an inspection device to ensure safety and a protection device to protect the power supply. The overall advancement of the invention enhances the reliability of the charging process and ensures safety during operation.

Problems solved by technology

In an actual scenario of prior art, the AGV might run out of electricity at any time.
Not having sufficient residual power to reach the charging region, the AGV might simply stall, and the normal operation of the other AGVs might be obstructed.
Further, if several AGVs run out of electricity at the same time, congestion will result at the charging region and negatively impact operation efficiency in the container terminal.
Further, the sliding contact type requires supports, which would be a negative factor for site safety.
As for the non-contact charging type, besides its requirement for precise positioning, its insufficient transmission power and incapability of providing quick charging for the lithium battery are all detrimental to the AGV operation efficiency.
Finally, the power supply is exposed outdoors and thus its life time would be shortened due to the adverse outdoor conditions in a container terminal.

Method used

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  • Automatic charging device for an AGV on an automated container terminal and charging method therefor
  • Automatic charging device for an AGV on an automated container terminal and charging method therefor
  • Automatic charging device for an AGV on an automated container terminal and charging method therefor

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Embodiment Construction

[0043]The entire AGV charging buffer region (place where AGV is charged or to be charged) is divided into a charging waiting region (place where AGV is waiting to be charged) and a charging region (place where AGV is charged). The division of the regions is mainly based on the RFID label array information. The RFID label array consists of several RFID labels with equal distances therebetween, as shown in FIG. 1. The array of circles inside the whole charging buffer region is referred to as RFID label 101 array. The region inside the dashed box is the AGV charging region, and the rectangle represents the AGV. The end of the vehicle which faces the direction of AGV′ movement is the front end of the vehicle, and the other end the rear end of the vehicle. The rectangles at the front and rear ends of the vehicle are two RFID read-write coils 109 arranged at front and rear ends of the AGV. The AGV mainly reads the information of RFID label in the charging region via the RFID read-write co...

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Abstract

An automatic charging device for an AGV on an automated container terminal and a charging method using the same are disclosed. The automatic charging device comprises a vehicle-mounted device and a ground device. The vehicle-mounted device comprises RFID read-write coils, a charging connector buffer device, a charging connector, a power measuring module, a vehicle charging controller and a vehicle-mounted wireless module. The ground device comprises an RFID label array, a power panel, a conductive groove, a pressure sensor, an electromagnet, a ground charging controller and a ground wireless module. The hook shaped charging plug, the charging connector buffer device and the power panel with the electromagnet improve success rate of connection between the power supply and the plug, and improve AGV working efficiency. RFID technology is used for positioning the charging region with high reliability. The pressure sensor and the safety cover ensure safety of the charging process and prevent electric leakage.

Description

FIELD OF INVENTION[0001]The present invention relates to a charging device for a carrier on a container terminal, and relates in particular to an automatic charging device for an automatic guided vehicle on an automated container terminal and a charging method therefor.BACKGROUND ART[0002]New generation automated container terminals realize automatic loading, unloading, and transporting of containers with a substantial raise in loading and unloading efficiency. For the intelligent horizontal transportation system, which being one of the six sub-systems in the new generation automated container terminal, the containers in-between a QC (quay crane) and an ARMG (automated rail mounted gantry) are engaged by automatic guided vehicles (AGVs). An AGV needs to be charged automatically after a specific period of operation.[0003]A typical charging process is as follows: when the voltage of the battery of the AGV is below a specific threshold, the automatic charging process is initiated and t...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H02J7/00B60L53/14B60L53/35B60L53/65H02J7/02G01R31/382G01C21/26G08G1/0968H01R13/62H01R11/12
CPCH01R11/12B60L53/35B60L53/14G01R31/382H02J7/02G08G1/096827B60L53/65H01R13/6205H02J7/0013G01C21/26Y02T10/70H02J2207/20Y02T90/167Y02T90/12Y02T10/7072Y02T90/14Y04S30/14H02J7/0042H02J2310/48
Inventor ZHAI, LINCHU, JIANXINWANG, FAN
Owner SHANGHAI MARITIME UNIVERSITY
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